Exponents

[Anon]

Hi there,

Just a math question... how do I use exponents with PHP4? I've tried so many things and can't find the right answer.

$x = 4^2; // this I thought would work... but it didn't...

also, I know I can get the square root of something using the sqrt function, however how can I get an Nth root of a number?

Thanks,

-Dico

[Anon]

I think that

$x = 4**2;

should work.

Don't know about the nth root, sorry.

[Anon]

I tried

$x = 4**2;

However that didn't work. It produced a "parse error".

Any other suggestions appreciated!

Hamish wrote:

I think that

$x = 4**2;

should work.

Don't know about the nth root, sorry.

[Anon]

You could always make your own function for exponents,

It would look something like this:

function power($base,$exponent) {

for($exponent,$exponent > 0, $exponent--) {
$base = $base*$base;
}

return $base;
}

correct me if I'm wrong.

Hope this helps,
SnipinBeava!

[Anon]

Hi there,

Thanks for you answers... I found the solution.

$x = pow(3,2);

This works great and gives me 3^2.

-dr